This is my doctrine: Give every other human being every right you claim for yourself. - Robert Green Ingersoll

Blasphemy is an epithet bestowed by superstition upon common sense.

No one infers a god from the simple, from the known, from what is understood, but from the complex, from the unknown, and incomprehensible. Our ignorance is God; what we know is science.

Standing in the presence of the Unknown, all have the same right to think, and all are equally interested in the great questions of origin and destiny. All I claim, all I plead for, is liberty of thought and expression. That is all. I do not pretend to tell what is absolutely true, but what I think is true. I do not pretend to tell all the truth. I do not claim that I have floated level with the heights of thought, or that I have descended to the very depths of things. I simply claim that what ideas I have, I have a right to express; and that any man who denies that right to me is an intellectual thief and robber. That is all.